21323112022031 has 4 divisors (see below), whose sum is σ = 21324987582000. Its totient is φ = 21321236462064.

The previous prime is 21323112021997. The next prime is 21323112022061. The reversal of 21323112022031 is 13022021132312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21323112022031 - 2¹⁰ = 21323112021007 is a prime.

It is a super-2 number, since 2×21323112022031² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21323112021988 and 21323112022006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21323112022061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 937762931 + ... + 937785668.

It is an arithmetic number, because the mean of its divisors is an integer number (5331246895500).

Almost surely, 2^{21323112022031} is an apocalyptic number.

21323112022031 is a deficient number, since it is larger than the sum of its proper divisors (1875559969).

21323112022031 is a wasteful number, since it uses less digits than its factorization.

21323112022031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1875559968.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21323112022031 its reverse (13022021132312), we get a palindrome (34345133154343).

The spelling of 21323112022031 in words is "twenty-one trillion, three hundred twenty-three billion, one hundred twelve million, twenty-two thousand, thirty-one".